[n: Perpendicular To The Direction Of Movement Of The Tape, E.g. For Longitudinal Scanning] {g11b 5/53d4} Patents (Class G9B/5.178)

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[n: with all the heads disposed in a plane substantially parallel to the plane of the tape, e.g. for circular scanning] {g11b 5/53d4e} (Class G9B/5.179)

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